5a. Grid Connection Codes

Transcription

1 5a. Grid Connection Codes Requirements for Generators Demand Connection Code HVDC Network Code JESG in Edinburgh 20 August 2013

2 The Third Energy Package 3 regulations and 2 directives. Adopted July 2009, law since March 2011 Key step forward in developing a (more) harmonised European energy market Separation of ownership of monopoly energy transmission activities Formation of European Transmission System bodies, ENTSOG and ENTSO-E Formation of ACER Agency for Cooperation of Energy Regulators Goals: 21

3 European Networks Codes Commission target to enter into force by end of 2014 Connection Codes Market Codes Operational Codes Requirements for Generators CACM Operational Security Demand Connection Code Forward Capacity Allocation Operational Planning and Scheduling HVDC Balancing Load-Frequency Control and Reserves 22

4 ENC High Level Interactions 9 codes, 1 package Possible market splitting Common structures and issues; different timescales Market Market Codes Capacity Allocation & Congestion Management Forward Markets Balancing Offshore generation Generator actions Demand side response Balancing across interconnectors Generation / Demand equivalent rules Capacity limits Coordinated planning Loss of infeed Frameworks & application Operational Codes Operational Security Operational Planning & Scheduling Load Frequency Control & Reserves Frequency control Governance Guidelines Transparency Regulations LCFR provides framework & Balancing takes actions 23

5 European Network Code (ENC) Development Process Commission starts development process The process for developing the European Codes is defined in EU law 6-12 months? 1-3 years ACER develops FWGL Commission invites ENTSO-E to develop European Code ENTSO-E develops European Code ACER reviews European Code Comitology by Commission National application /implementation by member states 6 months To fit work programme Stakeholder Engagement 1 year 3 months TARGET: By end of 2014: Codes become European Law Implementation mainly

6 Stakeholder engagement on the Network Codes Stakeholder Advisory Groups* External to ENTSO-E Public Consultation Stakeholder Working Groups National Regulatory Authority(s) e.g. TSOs * non-exhaustive list, SAG depends on individual Network Code Internal to ENTSO-E 25

7 Connection Codes Connection Codes Requirements for Generators Demand Connection Code HVDC Sets functional requirements which new generators connecting to the network (both distribution and transmission) will need to meet, as well as responsibilities on TSOs and DSOs. Sets functional requirements for new demand users and distribution network connections to the transmission system, basic Demand Side Response capabilities, as well as responsibilities on TSOs and DSOs. Sets functional requirements for HVDC connections and offshore DC connected generation. 26

8 Grid Connection Codes Where is it now? What happens next? Key Issues for GB Requirements for Generators Submitted to Commission DNV Kema impact assessment report for Commission - Sept Implementation guidance document (by Drafting Team) Sept Comitology predicted to finish Q1/ Changes in thresholds - 4 generators bands Requirements on much smaller units (from 800W) Retrospective application Demand Connection Code Submitted to Commission Likely to follow RfG into Comitology Practicality of application to domestic consumers Is this the right vehicle for DSR? HVDC Drafting in progress Initial scope and call for stakeholder input documents written 12 month timeframe for drafting by ENTSO-E finishes in May 2014 Next user group mtg - Sept TSO definitions, roles & responsibilities 27

9 RfG & DCC in Comitology jointly 28 28

10 Requirements for Generators (RfG) RfG was the first of the European codes to be developed and has provided a pilot for the process Applies requirements to smaller, embedded generation (now from 800W rather than 50MW in England & Wales) Operational notification process for all Embedded Plant allocated to Relevant Network Operators Overriding principles for GB application: Fit for purpose to cover future developments (move to increased non-synchronous generation) Assumes GB remains as a synchronous area Extensively replicates GB Grid Code requirements Application within GB is affected by new categorisation of generators (replacing Large, Medium & Small Power Station classifications with type A-D bandings) Generator Direct Connection to: Size SHET SPT NGET Small <10MW <30MW <50MW Medium MW Large 10MW+ 30MW+ 100MW+ RfG Type Generator Connection Capacity Voltage A 800W-1MW <110kV B 1-10MW <110kV C 10-30MW <110kV D 30MW >110kV 29

11 Demand Connection Focuses on the connection of industrial loads and DSOs Sets out requirements which will apply to the demand side of the power system, contributing to system security and efficient load management Generally seeks to mirror RfG requirements Introduces demand side response (DSR) 30

12 Daily Mail moments Sensors in domestic appliances would check [the] frequency every 0.2 seconds, and if it fell to 47Hz a level that would risk blackouts the devices would kick in and shut fridges, freezers and ovens down. 31 Front Cover: Mail on Sunday, 27 April 2013

13 High Voltage Direct Current (HVDC) Specifies requirements for long distance DC connections, links between different synchronous areas and DC-connected Power Park Modules, such as offshore wind farms, which are becoming increasingly prominent in the European electricity system. A relatively new area in which fewer standards or grid codes exist, making a pan- European approach particularly beneficial. Follows on from the RfG and DCC codes building on the same foundations to create a consistent and complete set of connection codes. Covers various configurations of HVDC including: AC connection point requirements for independent, single or multiple links AC connection point requirements for offshore PPMs DC meshed systems not currently included in the Network Code. 32

14 Questions Rob Wilson, nationalgrid 33